proton jishuken conference on 15 th february 2008 for part name: tyre 195/60 r15 88h part number:...
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PROTON JISHUKEN CONFERENCE ON 15th February 2008
FOR PART NAME: TYRE 195/60 R15 88H
PART NUMBER: PW824308MODEL : NEW SEDAN & GXMC3
PRESENTED BY:
EASY TBM GROUP CST AS
Group Motto: Strive For Excellence
Project Theme: Quality Without Compromise
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Sidewall Blister
Final Finish – Tyre Inspector
WHATWHAT
WHYWHY
WHENWHEN
WHOWHO
WHEREWHERE
HOWHOWOff standard Catalogue - max. 5
blisters more than 6 mm
Grader - Quality Management
During Building process (sidewall stitcher)
Poor stitching process
Tyre blister in sidewall
Our problem is the air trapped between sidewall rubber and
casing
WHENWHEN
WHEREWHERE
S/Wall StitcherNG
Low Pressure = NG
MATERIALMANAGEMENT MACHINE
MAN METHOD
Inappropriate sidewall profile
Wrong pressure used
Wrong settingPoor
workmanship
Air trapped in sidewall
Curing Inspection
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Process Flow after countermeasure
Countermeasure done/plan for each major contributor
Close monitoring (> 3days) histogram
Previous jishuken problem(s) monitoringhistogram (3mth per prob.)
a. Daily inspection of Stitcher Pressure condition at Building process.
• 2G @ Tyre Building during assembly process.• New Stitchting Pressure Digital Control at TBM• Standardized Stitching Pressure
From Nov 07 till Jan 08 scrap improvement, we manage to reduced cost of scrap tyre up to RM
2260.00 /month.
Ave. for 2 mth scrap RM390.00
RM2652.00
OKNG
Cost of kaizen
Nov. 07
Dec. 07
Jan 08
Monitoring in Jan 08 (Total Scrap = 6pcs)
3pcs scrap come from 3# machine